Multi-path Transmission Scheme Based on Segment Control in Low-Earth-Orbit Satellite Network

Because of the challenges brought by the high dynamic topology of satellite networks to the transport layer, this paper is mainly devoted to a multipath transmission control protocol (MPTCP) path selection scheme based on segment control technology and software-defined networking (SDN). We describe the signaling interaction mode of MPTCP and the process of segment control technology applied in the satellite network. According to the requirements of real-time and accuracy of data transmission, we consider the link delay, stability, and packet loss rate, and construct the scheme as a maximum-flow minimum-cost problem. The experimental results show that the proposed scheme can meet the low delay requirements of delay-sensitive traffic flow, improve bandwidth utilization, and ensure more efficient and reliable data transmission.